Magento 2 – How to get all options of specific attribute type?

In Magento 2 we can get all options of specific EAV entity types attribute. In Magento 2 There are many native EAV Entity Types are available.

You can get all options of specific attribute, Let’s we take a catalog_product Entity Type.
We take Color attribute from Catalog_Product Eav Entity Types. Fetch all the options of color attribute.
Create Block file,

<?php
namespace Rbj\AttributeOption\Block

class Option extends \Magento\Framework\View\Element\Template
{
    public function __construct(
        \Magento\Backend\Block\Template\Context $context,
        \Magento\Eav\Model\Config $eavConfig,
        array $data = []
    ) {
        $this->eavConfig = $eavConfig;
        parent::__construct($context, $data);
    }

    /**
     * Entity Type Catalog
     * Attribute code color
     * @return array
     */
    public function getOptionList()
    {
        $attribute = $this->eavConfig->getAttribute('catalog_product', 'color');
        return $attribute->getSource()->getAllOptions();
    }
}

Call Function From Template file,

$result = $block->getOptionList();
foreach($result as $option) {
    echo $option['value']. '=>' .$option['label'];echo "<br />";
}
echo "<pre>";print_r($result);

The result looks like,

Array
(
    [0] => Array
        (
            [label] =>
            [value] =>
        )

    [1] => Array
        (
            [value] => 49
            [label] => Black
        )

    [2] => Array
        (
            [value] => 50
            [label] => Blue
        )

    [3] => Array
        (
            [value] => 51
            [label] => Brown
        )

    [4] => Array
        (
            [value] => 52
            [label] => Gray
        )
        ....